When your horse farts and its perfectly acceptable and makes you laugh a little but when your friend or someone else does you get pissed off and say "that's sick!" Or "gross! Why would you do that around me!"
A non-horsey friend asks how your horse is and you think: "she's not doing very well since you just changed to a milder bit but you want to give her a chance to get used to it.", and you say "Fine." Because you know if you say what you are REALLY thinking, by the time you're done, your friend will be sitting there with a blank look on her face.
I love being a horse person